Variables
For applications that require a parameter that is variable, the DMC-1600 provides 254 variables.
These variables can be numbers or strings. A program can be written in which certain parameters,
such as position or speed, are defined as variables. The variables can later be assigned by the
operator or determined by program calculations. For example, a cut-to-length application may
require that a cut length be variable.
Example:
PR POSX
Assigns variable POSX to PR command
JG RPMY*70
Assigns variable RPMY multiplied by 70 to JG command.
Programmable Variables
The DMC-1600 allows the user to create up to 254 variables. Each variable is defined by a name
which can be up to eight characters. The name must start with an alphabetic character, however,
numbers are permitted in the rest of the name. Spaces are not permitted. Variable names should
not be the same as DMC-1600 instructions. For example, PR is not a good choice for a variable
name.
Examples of valid and invalid variable names are:
Valid Variable Names
POSX
POS1
SPEEDZ
Invalid Variable Names
REALLONGNAME
; Cannot have more than 8 characters
123
; Cannot begin variable name with a number
SPEED Z
; Cannot have spaces in the name
Assigning Values to Variables:
Assigned values can be numbers, internal variables and keywords, functions, controller parameters
and strings;
The range for numeric variable values is 4 bytes of integer (2
31
)followed by two bytes of fraction
(+/-2,147,483,647.9999).
Numeric values can be assigned to programmable variables using the equal sign.
Any valid DMC-1600 function can be used to assign a value to a variable. For example,
V1=@ABS[V2] or V2=@IN[1]. Arithmetic operations are also permitted.
To assign a string value, the string must be in quotations. String variables can contain up to six
characters which must be in quotation.
Examples:
POSX=_TPX
Assigns returned value from TPX command to variable POSX.
SPEED=5.75 Assigns
value
5.75 to variable SPEED
INPUT=@IN[2] Assigns
logical
value of input 2 to variable INPUT
V2=V1+V3*V4
Assigns the value of V1 plus V3 times V4 to the variable V2.
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Chapter 7 Application Programming
DMC-1600